Does protein build muscle? | Live science

Does protein build muscle? The answer to this question is a resounding yes. Muscle tissue consists of a repeating structure of two protein filaments: myosin and actin. Myosin and actin filaments interact with each other to initiate muscle contractions, and over time the mechanical stress caused by constant movement will damage these protein filaments.

As a result, your muscles need a daily supply of protein to recover and remain functional. Mechanical stress from weight training is strained enough to make your muscles bigger and stronger, which is why bodybuilders tend to train with extremely heavy weights. This is also the reason why they can use supplements like the best protein powder and on best protein bars – so they ensure their bodies contain enough protein building blocks to maintain their sculpted physiques.

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